We consider the pandaren models pretty much done: i.e. the distinctive longer tails for female red-coloured pandaren, that we like, are there to stay.

Let's say it like this: we don't want to repeat the female worgen on this one. We don't want to second-guess the design.

This may just be my interpretation and not our company's, but the way I see it is that with many things there's always going to be people that like it exactly how it is — as we do — and those that don't. If we change it, the people who didn't like it before the change might be satisfied by it changing, but there's also the chance they might not be. What's guaranteed, though, is that those who did like it just as it was (usually the silent majority) definitely won't like it being changed.